Effect of titanium based complex catalyst and carbon nanotubes on hydrogen storage performance of magnesium

Kadri, Atikah, Jia, Yi, Chen, ZhiGang and Yao, XiangDong (2013) Effect of titanium based complex catalyst and carbon nanotubes on hydrogen storage performance of magnesium. Science China Chemistry, 56 4: 451-458. doi:10.1007/s11426-013-4856-2


Author Kadri, Atikah
Jia, Yi
Chen, ZhiGang
Yao, XiangDong
Title Effect of titanium based complex catalyst and carbon nanotubes on hydrogen storage performance of magnesium
Journal name Science China Chemistry   Check publisher's open access policy
ISSN 1674-7291
1869-1870
Publication date 2013-04
Sub-type Article (original research)
DOI 10.1007/s11426-013-4856-2
Open Access Status
Volume 56
Issue 4
Start page 451
End page 458
Total pages 8
Place of publication Beijing, China
Publisher Zhongguo Kexue Zazhishe
Collection year 2014
Language eng
Abstract Mg (MgH2)-based composites, using carbon nanotubes (CNTs) and pre-synthesized titanium based complex (TCat) as the catalysts, were prepared by high energy ball milling technique. The use of both catalysts demonstrated markedly improved the hydrogen storage performance, e.g. a significant increase of hydrogen release rate and decrease of desorption temperature. The synthesized composites can absorb almost 6 wt% of hydrogen within 3 min at 200 C and desorb 6 wt% hydrogen in 10 min at 310 C. The influence of CNTs and TCat on desorption temperature was also investigated by using temperature programmed desorption (TPD). The TPD results reveal that the peak desorption temperature and the onset temperature can be lowered by 109 C and 155 C, respectively, compared to the non-catalyzed MgH2. The reaction enthalpy and entropy of hydrogen desorption for the synthesized MgH2-based composites are calculated by the van't Hoff analysis to be 73.1 kJ/mol H2 and 130.2 J/mol H2 K, respectively.
Keyword Hydrogen storage
Magnesium hydride
Carbon nanotubes
Titanium compound catalysts
Mechanical milling
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

 
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